Apparatus for manufacturing paper-pulp



(No Model.) 2 Sheets-Sheet 1.

J. B. CARTER. APPARATUS FOR MANUFACTURING PAPER PULP.

No. 479,243. Patented July 19, 1892.

' FIC- ITNEEEE5 N (No Model.) v 2 Sheets-Sheet 2.

J. B. CARTER. APPARATUS FOR MANUFACTURING PAPER PULP. No. 479,243. Patented July 19, 1892.

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UNITED STATES PATENT ()FFICE.

JOHN B. CARTER, OF KOKOMO, INDIANA.

APPARATUS FOR MANUFACTURING PAPER-PULP.

SPECIFICATION forming part of Letters Patent No. 479,243, dated July 19, 1892.

Application filed June 18, 1891.

To all whom it may concern.-

Be it known that I, JOHN B. CARTER, of Kokomo, in the county of Howard and State of Indiana, have invented certain new-and useful Improvemen ts in Apparatus for Manufactur- 1mg Paper-Pulp; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in an apparatus for reducing wood or other fibrous substances to pulp; and it consists in the construction and combination of parts, which will be fully described hereinafter, and pointed out in the claims.

The object of my invention is to provide for pulp-reducing machines a rubbing-surface of wire, which is constructed in the manner hereinafter shown and described, and to subject the wood to a flow of water above and below simultaneously with the rubbing operation, whereby the reduction of the stock is facilitated.

Figure 1 is a side elevation of a machine which embodies my invention, being shown partly in section. Fig. 2 is a section taken on the dotted line Y Y of Fig. 1 and looking in the direction indicated by the arrow. Fig.

' 3 is a side elevation of the wire-cloth frame and the water-pipes under it, looking in a direction at rightangles to that indicated by the arrow. Fig. l is a plan view of the wirecloth. Figs. 5 and 6 are enlarged detail views of the wire-cloth, showing the specific construction of the large wires. Fig. 7 is a vertical section of the wire-cloth, showing a preferred method of constructing it. Fig. 8 is an enlarged detail view of the upper large wire used in Fig. 7. Fig. 9 is an enlarged detail view of the lower large wire shown in Fig. 7. Fig. 10 is a plan view of a portion of one of the perforated pipes. Fig. 11 is a plan view of the Wire-cloth frame and the supportingguideway therefrom. Fig. 12 is a side elevation of the yoke connected to the wire-cloth frame. Fig. 13 is a plan view of the same.

A indicates a water-vat of any desired shape, size, or construction, and B vertical Serial No. 396.756- (No model.)

nected to the post B at their upper ends are i the braces G, which hold the feed-box firmly against any lateral movement. Thisfeed-box F is supported above the wire-cloth frame I-I about a quarter of an inch, so that as the said .frame is reciprocated it will not rub against the lower end of the feed box. Placed within and secured to the wire-cloth frame II is a wire-cloth I, the specific construction of which will be fully described hereinafter. Connected to one end of the frame H is a yoke I, to the opposite end of which yoke a reciprocating driving mechanism 1) of any suitable Jconstruction will be connected for the purpose of moving the wire-cloth frame back and' forth under the feed-box, and thus reducing the wood J, placed within the feed-box and resting upon the wire-cloth.

K indicates a guideway for the reciprocating frame H, and this guideway is supported upon the vertical standards or feet L, which are secured to the vat in any suitable manner. Supported under the wire-cloth I and adjacent to its under face are the water-pipes M, which have perforations N made through their inner sides, so that water within the said pipes under pressure will be thrown upward against the under side of the wire-cloth as it is being reciprocated. horizontal pipes M is a vertical supply-pipe O, and connected to this supply-pipe O is a horizontal pipe P, which extends inward over the top of the feed-box and is provided with any desired number of lateral pipes Q for supplying water on top of the wood to be reduced, so that the water will percolate through and be absorbed by the saidwood and the fiber as it is being reduced by a reciprocating wire-cloth.

The wire-cloth is preferably constructed as shown in Figs. 7, 8, and 9, and consists of the upper large wires R, which are provided with Connected to these.

transverse water-way grooves S on their upper surfaces, and between thesewater-way grooves S are the fiat portions T, upon which are placed the small wires U. These small wires U are placed upon these portions T and are doubled over the wires R and extend downward under the large wires V. These wires V are preferably smaller than the wires R and are provided on their under faces with small transverse notches \V for the reception of the small wires U, which after passing over the wires R pass under the wires V and in the said notches W. The wires U are tightened by means of the adj ustable hooked bolts X, which have their screw-threaded ends to pass through a bar Z, which is secured to the wirecloth frame H. By means of this construction the wire-cloth can be stretched or tightened to any desired degree and at the will of the operator.

In Figs. 5 and 6 I show a modification of the construction of the wire-cloth, which consists of large wires R, which are provided on their upper faces with the transverse waterway grooves S and the flat portions T, which are similar to the construction shown in Fig. 8. These wires R are also provided on their under sides with transverse grooves VV' for the reception of these small wires U, as shown in the said figures. The small wires U pass over the large wires R upon the portions T and under the same wires in the notches W, thus causing the wires to cross, as shown in Fig.6. The object of the small notches W and W is to prevent the small wires from slipping, and the object of the transverse waterway grooves S and S is to allow the pulp to fall this much below the small wire when it is rubbed off of the wood,so that the reduced fiber is not near so liable to form into a web between the wires as it is where grooves are not formed, which allows the pulp to drop below the upper wire, where the water will more readily wash it out and the reciprocating movement of the wire-cloth shake it out. It

is found in practice that the reduced fiber will form into a web in an ordinary wire screen, which will stop, practically, the rub hing action of the machine, and it is the particular function of these grooves to avoid the forming of a web, which I find they do. As shown in Fig. 4, the large and smallwires extend diagonally across the reciprocating movement, so that the wood is not rubbed in ridges, as would be the case if the wires extended in a line with and across the line of movement.

Heretofore it has been common to subject the reduced wood or pulp to the action of water at directly the point where it is being reduced, while my principal obj ect is to furnish a flow of water to the top of the wood, so that it will percolate down through the wood and be absorbed by the pulp as it is rubbed off, making it heavy, so that it will fall out readily by the reciprocating movement of the wire-cloth.

Having thus described my invention, I claim- 1. A wire-cloth for wood-pulp-reducing machines, consisting of large wires having transverse water-ways on their upper sides and small wires which cross the large wires and are placed between the said grooves, substantially as described.

2. In a pulp-reducing machine, a reciprocating frame, a wire-cloth secured therein having large wires, and small wires passed over and under the said large wires, and tightening devices which are connected with one or more of the large wires for the purpose of stretching the said cloth, substantially as described.

3. In a pulp-reducing machine, a vat, a reciprocating wire-cloth over the vat, a feedbox supported over the wire-cloth, perforated water-pipes under the said cloth, and watersupply pipes extending over the feed-box, the parts combined substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN B. CARTER. Witnesses:

H. M. COOPER, O. E. MIDDLETON. 

